If you’re a Sprint customer and you’ve been waiting for a nice 4G-capable phone with a slide-out QWERTY keyboard, your wait will soon be over. Samsunghas announced the Epic 4G (pictured above), a 1GHz Android phone with a 4-inch “Super AMOLED” touchscreen at 800×480 resolution, a six-axis accelerometer for gaming, and rear- and front-facing cameras.

Pricing and availability haven’t been announced yet, but Samsung is holding a big press conference tomorrow where we’ll likely find that info out. Judging by the availability dates of the next phones in this post, guessing the Epic 4G might be available sometime next month for around $200.

We now know it’ll cost $200 and it’ll be available July 21st. It’s got the same Super AMOLED screen as the Epic 4G except there’s no hardware keyboard and no 4G compatibility. It is compatible with T-Mobile’s relatively fast HSPA+ network, though.

It will also be preloaded with The Sims 3, Avatar, Amazon’s Kindle software, MobiTV, Slacker Radio, and more. There’s a 5-megapixel camera capable of 720p video and the on-screen keyboard is powered by Swype.

And finally, Verizon Wireless will be getting the Samsung Fascinate, which appears to be similar to the T-Mobile Vibrant. There are no pricing or availability details with this one yet either, though I’d expect it to fall in line with the Vibrant at $200 and be available at around the same time.

Samsung holds a press conference tomorrow officially announcing all these new models. Each of these phones is running Android 2.1 and will be upgradeable to Android 2.2 when it rolls out this summer